nco: nco (netCDF Operators Software Stack) nco: nco: The NCO toolkit manipulates and analyzes data stored in netCDF- nco: accessible formats, including DAP, HDF4, and HDF5. It exploits the nco: geophysical expressivity of many CF (Climate & Forecast) metadata nco: conventions, the flexible description of physical dimensions nco: translated by UDUnits, the network transparency of OPeNDAP, the nco: storage features (e.g., compression, chunking, groups) of HDF (the nco: Hierarchical Data Format), and many powerful mathematical and nco: statistical algorithms of GSL (the GNU Scientific Library). nco: